US8216414B2 - Method of producing a multiplicity of incontinence pads having main part and front and rear side parts attached thereto - Google Patents

Method of producing a multiplicity of incontinence pads having main part and front and rear side parts attached thereto Download PDF

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Publication number
US8216414B2
US8216414B2 US11/992,583 US99258306A US8216414B2 US 8216414 B2 US8216414 B2 US 8216414B2 US 99258306 A US99258306 A US 99258306A US 8216414 B2 US8216414 B2 US 8216414B2
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Prior art keywords
pad
pad side
side part
part sheet
sheet
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US11/992,583
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US20090084497A1 (en
Inventor
Fridmann Hornung
Ruediger Kesselmeier
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Paul Hartmann AG
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Paul Hartmann AG
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Assigned to PAUL HARTMANN AG reassignment PAUL HARTMANN AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HORNUNG, FRIDMANN, KESSELMEIER, RUEDIGER
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49014—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the side panels
    • A61F13/49015—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the side panels the elastic means being elastic panels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15203—Properties of the article, e.g. stiffness or absorbency
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15699—Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15756—Applying tabs, strips, tapes, loops; Knotting the ends of pads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1056—Perforating lamina
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly
    • Y10T156/1067—Continuous longitudinal slitting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1089—Methods of surface bonding and/or assembly therefor of discrete laminae to single face of additional lamina

Definitions

  • the invention concerns a method for producing a multiplicity of disposable incontinence pads having a pad main part and front and rear pad side parts attached thereto.
  • disposable incontinence pads i.e. hygiene articles that are normally used for adults, in particular for older people, usually protrude. They are used for correct positioning of the hygiene article on the body and may also be designed to be elastic or elasticised.
  • Expansion defines the ratio between an increase in length of a pad side part due to the action of a force and the original length. Forces act on the pad side parts, in particular, in the peripheral direction, i.e. transversely to the pad, during use of such disposable incontinence pads.
  • the property “expansibility” thus defines the degree of expansion of the pad side part in response to a force that acts in the transverse direction of the pad. This means, the higher the degree of expansion the higher the expansibility.
  • a rear pad side part expands more than a front pad side part under the action of normal forces during use of the pad.
  • a rear pad side part expands more than a front pad side part under the action of a force of 45 N.
  • a rear pad side part preferably expands by at least 20%, in particular at least 25%, and moreover in particular at least 30% under the action of a force of 45 N.
  • a front pad side part expands only by preferably at most 15%, in particular at most 10%, and moreover at most 8%, under the action of a force of 45 N.
  • At least one rear pad side part is advantageously elastically expandable at least in a transverse direction.
  • the expansibility of the pad side part is termed elastic when a temporarily exerted force produces an expansion of at least 40% of which at most 20% remains (remaining expansion) when this force is eliminated.
  • the elastic expansibility of a rear pad side part in the transverse direction is at least 40%, in particular at least 50%.
  • the absolute extent of the elastic extension of a rear pad side part is at least 3 cm, in particular at least 5 cm, and moreover at least 7 cm.
  • a pad main part sheet is supplied in an endless fashion, and pad side parts are joined to this pad main part sheet in a manner as claimed above.
  • the pad side parts originate from an endlessly supplied pad side part sheet from which longitudinal sections are separated, applied to the endlessly supplied pad main part sheet, and fixed thereto.
  • a separating cut is performed through a respective longitudinal section for singling the disposable incontinence pads, such that one partial section of this longitudinal section belongs to one incontinence article and the other partial section belongs to the neighboring incontinence article.
  • the relevant areas of the pad side part sheet are designed as mentioned above in view of their expansibility, the above-mentioned longitudinal sections are separated from the pad side part sheet, and the separating cut during singling of the disposable incontinence articles is guided in such a fashion that a rear pad side part, i.e. a pad side part which is joined to the rear hip area or rear area of the pad main part has a higher expansibility than a front pad side part which is joined to a front hip area or belly area of the pad main part. It has turned out that this differentiated expansibility improves the fit of the incontinence article or in other words, there is no need to provide mutually corresponding expansibilities in the front and rear pad side parts.
  • the pad main part or the pad main part sheet may basically be produced in a continuous fashion in the longitudinal direction, in particular, from non-woven or foil material or from a non-woven/foil composite material.
  • a respective pad main part has an absorption core comprising liquid-storing, preferably super-absorbent materials, which can be disposed, in particular, as a pre-fabricated unit onto a carrier sheet of the pad main part sheet.
  • This carrier sheet could e.g. comprise a foil layer or also a composite foil with a thin non-woven support on the later outer side, wherein absorption cores can be disposed onto this carrier sheet one after the other in the longitudinal direction and at a separation from each other, and preferably be fixed to the carrier sheet.
  • This may be a pre-fabricated absorption core, as mentioned above, which is also often called suction element, or the absorption core may be constructively formed by disposing absorbent fiber material, preferably with super-absorbent polymer materials.
  • first elastic elements that extend in the first longitudinal direction are joined to both sides of the pad main part sheet. These elastic elements may also be provided along the leg openings following a defined contour, or may also extend exactly in the longitudinal direction.
  • second elastic elements that extend in the first longitudinal direction in particular, in the form of so-called upright cuff elements which are disclosed per se e.g. in EP0263720A1, may be attached to the pad main part sheet.
  • These preferably upright second elastic elements quasi flank a center of the pad main part or of the suction element. They may be provided in the area of the suction element edges, within the suction element edges or outside of the suction element edges. They form a lateral outlet protection of the incontinence article.
  • the longitudinal sections are supplied to the application station with a first speed v 1 and the endless pad main part sheet is supplied to the application station with a second speed v 2 , wherein the first speed v 1 is slower than the second speed v 2 .
  • the longitudinal sections of the pad side part sheet are separated at a relatively low speed v 1 and then preferably accelerated to the speed v 2 , such that the longitudinal sections are preferably disposed onto the pad main part sheet at the same speed v 2 .
  • This acceleration may e.g. be performed by an application roller which can be pressurized, in particular, by under pressure, and is disposed in the transporting direction of the pad side part sheet of a separating or cutting station where the longitudinal sections are separated, in particular, directly thereafter.
  • the second speed may be faster than the first speed v 1 by at least 40%, in particular at least 70%, in particular at least 90%, in particular at most 200%.
  • the pad side part sheet may comprise a first carrier material which has a regular pattern, in particular, of window-like recesses, which are bridged by elastically expandable material or elastic elements such as e.g. elastic foils or elastic non-woven materials.
  • a first carrier material which has a regular pattern, in particular, of window-like recesses, which are bridged by elastically expandable material or elastic elements such as e.g. elastic foils or elastic non-woven materials.
  • the above-mentioned recesses may be provided in the carrier material of the pad side part sheet already prior to entry into the production machine, or they are advantageously cut or punched out only directly during production of the inventive disposable incontinence pads in the pad production machine.
  • the latter is advantageous in that the carrier material can be introduced into the production machine in an endless fashion from the roll without previous positioning, which also facilitates roll change.
  • the elastic material or the elastic elements can also be disposed in the carrier material of the pad side part sheet via the recesses in the carrier material already prior to entry into the production machine and be fixed with respect to the carrier material, or they are advantageously disposed only directly during production of the inventive disposable incontinence pads within the machine via the recesses in the carrier material and fixed with respect to the carrier material.
  • the recesses are introduced into the carrier material and the longitudinal sections are separated from the pad side part sheet in such a fashion that the recesses are advantageously disposed only within the second partial sections.
  • a respective first partial section thus remains substantially unchanged with respect to expansibility properties of the first carrier material.
  • the respective second partial section is expandable due to the elastic material that bridges the recess.
  • Elastic expansibility is provided by applying elastic material or elastic elements.
  • the provision of recesses in the pad side part sheet enables working with a continuous carrier material that is endless in the longitudinal direction and has recesses in correspondence with the position of the longitudinal sections to be separated and with the position of the partial sections of these longitudinal sections, which are bridged by elastic material. It is thus possible to realize differentiated expansibility of a sheet which is continuous in the longitudinal direction.
  • One further possibility to obtain modification of the expansibility properties in some areas consists in weakening again some areas of the pad side part sheet in an alternating fashion, preferably by a technology known as “ring rolling” technology.
  • This technology is described e.g. in EP 0 573 586 B1 and EP 0 650 714 A1.
  • ring rolling a material which is not expandable per se, e.g. a foil material or a non-woven/foil laminate, is overstretched by excessive deflection between intermeshing rollers. In this overstretched state, the material which is not expandable per se does not substantially resist elongation. Elastic expansibility in the correspondingly treated area can thus be achieved through combination with an elastically expandable element. It is therefore advantageous to form the elastic areas of the pad side part sheet by applying elastic material onto the carrier material and overstretching the carrier material in some areas.
  • the elastically expandable material which can be provided for the pad side part sheet could be disposed in an alternating fashion in the longitudinal direction, i.e. at a separation from each other on the pad side part sheet. It may also be advantageous to form the elastic elements of the pad side part sheet by a material that extends continuously in the longitudinal direction of the pad side part sheet, in particular, a lamellar elastic material which is activated only in sections in the longitudinal direction. This sectional activation can be realized by local weakening of the carrier material, e.g. by providing recesses or by “ring rolling” or in any other fashion e.g. also by providing perforations, as mentioned above.
  • the arrangement of an elastic material that is continuous in the longitudinal direction involves corresponding material costs, this arrangement turns out to be easier in terms of construction for fast-running machines than intermittent disposal of elastic material.
  • At least two, preferably exactly two, expandable preferably elastically expandable areas are provided in the second partial section of the pad side part sheet.
  • a first expandable area is provided on or in the vicinity of the upper transverse edge of the second partial section and a second expandable area is provided on or in the vicinity of the lower transverse edge of the second partial section.
  • the rear pad side part has a greater expansibility at exactly that position where, according to experience, the highest forces act during use, e.g. during closing the disposable incontinence pad. Tearing off the pad side parts from the main part can thereby be prevented.
  • the elastic material or elastic material sections could be provided on an upper side or lower side of the carrier material of the pad side part sheet. It has turned out to be advantageous to dispose the elastic material like a sandwich between a first and a second carrier material of the pad side part sheet.
  • the pad side part sheet or the above-mentioned longitudinal section of the pad side part sheet could be separated in the longitudinal direction into a left-hand and a right-hand part prior to application, which are then applied and fixed to the left-hand or right-hand side edge of the pad main part sheet.
  • a longitudinal section of the pad side part sheet could be designed continuously in one piece in a transverse direction of the pad, such that it continuously bridges the respective front or rear hip area of the pad main part.
  • the disposable incontinence pad is finally singled after application and fixing of the partial sections of the pad side part sheet to the pad main part sheet.
  • substantially one single separating cut may be guided through the longitudinal section and the pad main part sheet. It is also feasible to guide the separating cut only through the longitudinal section, i.e. if the pad main part sheet has been previously separated transversely to the longitudinal direction for forming individual pad main parts, which are then fed, at a certain separation from each other, to the application station where the longitudinal section covers this separation like a bridge.
  • Common singling, wherein the cut extends through the longitudinal section of the pad side part sheet and also through the pad main part sheet is, however, preferred.
  • the front pad side parts may advantageously substantially be non-expandable while the rear pad side parts are expandable, in particular elastically expandable.
  • the length of the rear pad side parts i.e. their extension in the longitudinal direction of the pad, is advantageously at least 10 cm, in particular at least 15 cm, moreover in particular at least 18 cm, and moreover, in particular at least 22 cm.
  • the length of the rear pad side parts is advantageously at least 10%, in particular at least 15%, in particular at least 20%, and moreover, in particular at least 22% of the overall length of the disposable incontinence pad.
  • the overall length of the disposable incontinence pad is advantageously 50 to 120 cm, in particular 60 to 110 cm, and moreover in particular 70 to 110 cm.
  • the front pad side parts advantageously have a smaller longitudinal extension than the rear pad side parts, in particular by at least 5%, in particular at least 10%, in particular at least 15%, and moreover, in particular at most 50%.
  • the width of the pad side parts i.e. the extension of the pad side part past the side edge of the pad main part is advantageously 10 to 40 cm, in particular 12 to 30 cm, in particular 13 to 25 cm.
  • the front pad side part advantageously has the same width as the rear pad side part.
  • the pad side parts joined to the pad main part are advantageously formed from a non-woven material, at least in some areas.
  • spunbond materials S or spunbond-meltblown materials (SM), or meltblown layers (SMS), which are provided on both sides with spunbond materials, or also carded non-woven materials are preferably used.
  • Non-woven laminates i.e. in particular, two-layered, three-layered or multi-layered combinations of the above-mentioned non-woven materials may also be used.
  • the individual layers may e.g. be connected by conventional and familiar methods, e.g. through thermal joining methods (welding, in particular laser welding, hot melt, air-through) or through ultrasound welding methods.
  • the pad side parts joined to the sides of the pad main part are designed to be breathable at least in sections, wherein, in particular, porosity is regarded as being advantageous which permits air exchange and also permeability for moisture in the form of water vapor.
  • the pad side part material advantageously has a surface density of 10 to 150 g/m 2 , in particular 20 to 100 g/m 2 and preferentially 25 to 50 g/m 2 .
  • the pad side parts are folded on top of themselves and/or onto the pad main part about at least one folding line that extends in the first longitudinal direction.
  • the folded pad side parts are advantageously detachably fixed to joining locations or joining areas, as disclosed in DE202004006951.2, the entire disclosure of which is hereby incorporated by reference, in particular, by ultrasound weld points.
  • the relevant pad side part can be held in a controllable stable configuration in the technical process within the production machine and fluttering up can be reliably prevented.
  • Folding and optionally detachably fixing of the folded pad side parts is preferably performed prior to separating the longitudinal sections.
  • the still endless pad side part sheet is thereby preferably folded, which is advantageous due to the more compact design of the subsequent application stations.
  • a gripping area for unfolding the pad side part is provided at a partial area forming the free end of the pad side part in a transverse direction of each folded pad side part.
  • this gripping area may be formed by a longitudinal side edge section of the mentioned partial area which a user can grip with his/her fingers. It is also feasible to provide a separate manually graspable gripping element on the respective partial area, which would, however, involve additional production expense.
  • the detachable fixing can advantageously be separated at all joining locations or joining areas during unfolding through pulling once a gripping area of the respective pad side parts. This further facilitates handling and the incontinence article is thereby even user-friendlier, in particular, for application to persons needing a great deal of care.
  • a respective pad side part is folded on top of itself about a folding line, such that two partial areas lie on top of each other or against each other.
  • the pad side part is preferably folded on top of itself about at least two folding lines to obtain a Z-shaped cross-sectional configuration.
  • the pad side parts are folded on top of themselves about three folding lines.
  • the pad side parts are folded on top of themselves about four folding lines.
  • the respective gripping areas face the outside in a transverse direction prior to unfolding of the pad side parts, i.e. face away from each other and from a longitudinal center axis of the pad main part which is spread out on a flat support, such that a user can easily grip it with his/her left hand from the left-hand side and with his/her right hand from the right-hand side.
  • Detachable fixing of the partial areas of the pad side parts, which are folded on top of themselves, to each other and possibly also to the pad main part is preferably formed by several substantially dot-shaped joining locations.
  • a dot-shaped joining location of the above-mentioned type means that the joining location has a surface (as projected on the X-Y-plane of the pad main part) of less than 5 mm 2 , in particular less than 2 mm 2 , and moreover, in particular, less than 1 mm 2 .
  • the joining locations need not be strictly dot-shaped or circular. Other shapes than dot-shaped or circular, such as triangular, rectangular, polygonal or oval shapes are also feasible and advantageous.
  • the partial areas of the pad side parts, which are folded on top of themselves, are advantageously detachably fixed to each other through preferably dot-shaped joining locations generated by heat or ultrasound.
  • the number, distribution or surface portion of the joining locations or the adhesion of the detachably joined partial areas can be selected such that detachable fixation to all joining locations or joining areas can be released during unfolding by pulling the respective gripping area of the pad side parts once.
  • This can be advantageously supported in that the number or the surface portion of the joining locations or the adhesion of the detachably joined partial areas decreases with decreasing distance from the gripping area of the pad side part.
  • the pad side parts are advantageously folded inwardly about a folding axis that extends in the longitudinal direction onto the side of the pad main part facing the body prior to use of the folded article, to form an arrangement which is folded on top of itself, such that a first rear pad side part, e.g. the right-hand side, rests at least in some areas below the second, e.g. the left-hand side, rear pad side part.
  • a respective pad side part may thereby advantageously be folded on top of itself at least about a folding line that extends in the longitudinal direction as described above.
  • This folded arrangement is preferably detachably fixed to a first joining location.
  • the pad side parts preferably the rear pad side parts, comprise closure elements for closing the incontinence article when applied to a user, which may be mechanically adherent or adhesive and which are preferably themselves arranged in a folded configuration on the pad side parts that can be unfolded for use.
  • the closure elements suitably cooperate with a contact area on the outer side of the pad main part and/or on the pad side parts in a detachable adhesive fashion or by glue.
  • the singled disposable incontinence pads are advantageously folded about at least one folding line that extends transversely to the first longitudinal direction.
  • the invention also concerns disposable incontinence pads comprising the features in correspondence or in accordance with the features of the attached method claims of the present patent application.
  • Protection is claimed, in particular, for a disposable incontinence pad with a pad main part and front and rear pad side parts which are joined thereto, wherein the rear pad side parts have a greater expansibility than the front pad side parts. Protection is also sought for a disposable incontinence pad comprising a pad main part and front and rear pad side parts joined thereto, wherein the rear pad side parts have a greater expansibility than the front pad side parts in combination with one or more of the features of the embodiments of the invention described above or below.
  • a blade or scissors can be used for this purpose. If the pad side part is detachably fixed at the joining locations or joining areas in a configuration in which the pad side parts are folded on top of themselves or folded on top of each other, all joining locations and joining areas are initially manually released prior to separation from the pad main part, and the pad side part is completely unfolded.
  • the pad side part centered with a longitudinal side edge, is then fixedly clamped to a lower clamp of the tension testing device over its entire length (in the longitudinal direction of the incontinence article) with which it was previously joined to the pad main part (clamping depth 15 mm).
  • the lower clamp of the tension testing device must therefore have a corresponding length, suitably a length of 300 mm.
  • the movable clamp of the tension testing device is also fixedly clamped along its entire length at the opposite free longitudinal side edge of the separated pad side part (clamping depth 15 mm).
  • the initial length to be subjected to the tensile force thus corresponds to the full pad side part width minus the clamping depth in the clamps.
  • FIG. 1 shows a schematic view of the inventive production method
  • FIG. 2 shows a schematic top view of a disposable incontinence pad produced according to the inventive method
  • FIG. 3 shows a schematic top view of a pad side part sheet with indicated separating lines
  • FIG. 4 shows a schematic top view of a pad side part sheet with indicated separating line shape (with off-cut);
  • FIG. 5 shows a top view of separated longitudinal sections of the pad side part sheet of FIG. 4 ;
  • FIG. 6 shows a top view of a pad side part sheet according to a further inventive method variant with an elastic material that is continuous in the longitudinal direction;
  • FIG. 7 shows a top view of a pad main part sheet with applied longitudinal sections of a pad side part sheet
  • FIG. 8 shows a top view of a pad main part sheet with applied longitudinal sections of a pad side part sheet with indicated contour cut for singling
  • FIG. 9 shows a top view of a pad main part sheet with applied longitudinal sections with an indicated straight separating cut
  • FIG. 10 shows a top view of a pad side part sheet according to a further inventive method variant
  • FIG. 11 shows a top view of a pad side part sheet according to a further inventive method variant.
  • FIG. 12 shows a schematic top view of a disposable incontinence pad produced according to the inventive method, thereby providing a pad side part sheet produced according to FIG. 11 .
  • FIG. 1 clearly shows the inventive method for producing a plurality of disposable incontinence pads 2 which are schematically shown in the top view of FIG. 2 .
  • the disposable incontinence pads 2 to be produced (called pads 2 below) comprise a pad main part 4 with an absorption core 6 disposed thereon, whose longitudinal extension is smaller than the longitudinal extension of the pad main part 4 , and front pad side parts 8 and rear pad side parts 10 .
  • the length of the pad main part L 1 is 815 mm.
  • the width B 1 of the pad main part is 320 mm.
  • the length L 2 of the rear pad side parts is 230 mm.
  • the length of the front pad side parts L 3 is 170 mm.
  • the width B 2 of the front and rear pad side parts is uniformly 170 mm.
  • the front and rear pad side parts 8 and 10 are undetachably joined to a front hip area 12 or a rear hip area 14 of the pad main part 4 (laterally in each case in FIG. 2 ).
  • the rear pad side parts 10 have a greater expansibility than the front pad side parts 8 , which is schematically indicated by an elastically expandable area or section 16 at the rear pad side parts 10 .
  • First elastic elements 20 are also indicated, which extend in a longitudinal direction 18 of the pad on both sides of the absorption core 6 .
  • Further second elastic elements (not shown) may be provided in the form of upright cuff or collar elements which form a lateral outlet protection substantially at the edges of the absorption core 6 .
  • Closure elements 90 are schematically indicated, which are disposed at the rear pad side parts and can cooperate in an adhesive fashion with the outer side of the pad main part and preferably also with the front pad side parts during use.
  • a pad side part sheet 22 is formed in accordance with FIG. 1 (upper area) and supplied towards an application station 24 .
  • the pad side part sheet 22 comprises a first sheet 28 , which can be endlessly unrolled from a supply roll 26 , of a substantially non-expandable carrier material 30 , and a second sheet 34 of an elastically expandable material 36 that can be endlessly unwound from a supply roll 32 .
  • the second sheet 34 which is only schematically shown in FIG. 1 , may e.g. comprise two strip-shaped sheets which are separated from each other in the transverse direction, as shown below in connection with FIG. 6 .
  • the sheets 28 and 34 are disposed on top of each other and are permanently connected to each other by any joining technique, as indicated by two rolls that form a joining station 38 .
  • An activation station 40 is provided in the supply direction downstream of the joining station 38 , in which the elastically expandable properties of the elastically expandable material 36 are activated in that in some areas, as indicated in FIG. 6 , the non-expandable carrier material 30 of the first sheet 28 is treated in an area 42 in such a fashion that it can no longer resist expansion. This can be achieved e.g.
  • the pad side part sheet 22 is elastically expandable in the area 42 indicated in FIG. 6 .
  • the elastically expandable material 36 disposed in a lamellar fashion in the other areas outside of the area 42 cannot develop its elasticising effect, since the non-expandable carrier material 30 prevents substantial expansion of the pad side part sheet 22 .
  • the pad side part sheet treated in this fashion is further supplied with the speed v 1 towards a separating station 44 where longitudinal sections 46 are separated from the pad side part sheet 22 in a direction transverse to the supply direction and accelerated to a speed v 2 by a schematically indicated acceleration roller 47 and supplied to the initially mentioned application station 24 .
  • These longitudinal sections 46 are limited in FIGS. 3 through 10 in each case by a separating line designated with reference numeral 48 .
  • FIG. 1 shows the supply and delivery of an endless pad main part sheet 50 .
  • the pad main part sheet carries an endless number of absorption cores 6 which are disposed one after the other and spaced apart. Also indicated is a covering layer 54 .
  • the absorption core 6 and the covering layer 54 are regarded as belonging to the pad main part sheet 50 .
  • the pad main part sheet is endlessly supplied towards the application station 24 at a speed v 2 .
  • the longitudinal sections 46 of the pad side part sheet 22 ( FIG. 1 ) are applied to the pad main part sheet 50 in such a fashion that they are bridged in the area 52 between two absorption cores 6 or are disposed in this area. This is shown e.g. in the top view of FIGS.
  • the applied longitudinal sections 46 are undetachably connected, i.e. fixed, to the pad main part sheet 50 in the application station 24 or preferably substantially downstream thereof. Such a fixed area is e.g. designated with the reference numeral 56 in FIGS. 2 , 8 , and 9 .
  • the composite obtained in this fashion is further supplied towards a singling station 58 where a separating cut is performed substantially transversely to the supply direction which corresponds to the longitudinal direction 18 of the pad 2 to be produced, e.g. using a rotating knife drum or a punching tool.
  • the separating cut is indicated in the figures with reference numeral 60 .
  • the second partial section forms the pad side parts 10 provided in the rear hip area 14 and the first partial section 62 forms the pad side parts 8 provided in the front hip area 12 .
  • FIGS. 3 through 11 describe different inventive method variants:
  • a pad side part sheet 22 is supplied in the direction of the arrow. It shows the first sheet 28 of carrier material 30 with lamellar sections 70 of elastically expandable material 36 .
  • the elastic material 36 is not continuously disposed onto the first sheet 28 in the supply direction (as shown in FIG. 6 ) but in spaced-apart sections 70 .
  • the carrier material 30 of the first sheet 28 is again substantially non-expandable.
  • the non-elastic carrier material 30 in these areas must be treated as described above.
  • the carrier material 30 may be locally overstretched at that location, or recesses could be provided at that location in the carrier material 30 .
  • the pad side part sheet 22 is divided in the longitudinal direction into a left-hand and a right-hand sheet, as indicated by the central dashed line 72 , which can then be joined to lateral areas of the pad main part sheet 4 as indicated in FIG. 2 .
  • FIG. 4 shows the shape of a separating line 48 for forming longitudinal sections 46 in the separating station 44 .
  • the separating line 48 is guided in a rectangular fashion, such that a rectangular section 72 to be discarded is separated from the pad side part sheet 22 .
  • the separating line 48 is thereby guided in such a fashion that it includes the end of a respective lamellar section 70 of elastically expandable material 36 . Positioning inaccuracies can thereby be compensated for and it is ensured that each lamellar section 70 extends flush with the rear hip edge of the pad 2 or the relevant pad main part 4 .
  • FIG. 5 shows the separated longitudinal sections 46 of the pad side part sheet 2 .
  • the lamellar section 70 of elastically expandable material extends to the rear hip edge in accordance with the invention, at the same time ensuring that no elastic material extends into the front hip area 12 of the bordering pad 4 or the bordering pad main part 4 . This is clearly shown in connection with FIG. 9 and explained below.
  • FIG. 7 schematically shows a pad main part sheet 50 onto which are disposed spaced-apart longitudinal sections 46 of a pad side part sheet 22 , which are e.g. undetachably connected to the pad main part sheet 50 e.g. via ultrasound welding, glue etc.
  • a separating cut 60 for singling the pads 2 is only indicated at the top of FIG. 7 , while at the bottom of FIG. 7 , the singling station 58 has already been passed and the separating cut 60 has been performed.
  • a first partial section 62 is thereby formed which has no elastically expandable material 36 , as well as a second partial section 64 having the lamellar section or area 70 of an elastically expandable material 36 .
  • the first partial section 62 forms front pad side parts 8 and the rear partial section 64 forms rear pad side parts 10 .
  • the pad side part sheet 22 was not separated along its longitudinal direction into a left-hand and right-hand part, but a respectively formed longitudinal section 46 extends continuously in one piece in a transverse direction of the pad 2 over the width of the pad, i.e. continuously bridges the pad in the transverse direction (in contrast to the schematic view of FIG. 2 ).
  • a pad side part sheet 22 is supplied in the direction of the arrow.
  • the first sheet 28 of carrier material 30 is shown with lamellar sections 70 a , 70 b of elastically expandable material 36 a , 36 b .
  • two lamellar sections 70 a , 70 b of elastically expandable material 36 a , 36 b are provided in each case in a respective second partial section 64 which forms a rear pad side part.
  • a respective first partial section 62 which forms a front pad side part has no elastically expandable area.
  • a respective rear pad side part 10 has a first expandable area 16 a on or in the vicinity of an upper transverse edge 170 of the pad side part, and a second expandable area 16 b on or in the vicinity of a lower transverse edge 171 as shown in FIG. 12 .
  • a substantially non-expandable area 161 remains between the expandable areas 16 a , 16 b .
  • the rear pad side part has a higher expansibility at exactly that location where the greatest forces act during use according to experience e.g. during closing the disposable incontinence pad. This can prevent the pad side parts from being torn off the main part.
  • the non-expandable area 161 also ensures a higher stability of the pad side part which is favorable for handling the disposable incontinence pad during use and also for production thereof in a fast running pad machine.
  • FIG. 8 shows another embodiment, wherein the pad side part sheet 22 was separated in the longitudinal direction into a left-hand and a right-hand part. This is advantageously, but not necessarily, effected upstream of the separating station 44 where the longitudinal sections 46 are formed. A left-hand and a right-hand longitudinal section 46 are correspondingly disposed onto the pad main part sheet 50 in the application station 24 and undetachably fixed.
  • the shape of a separating cut 60 formed as a contour cut 78 is also indicated, which, however, produces a section 80 to be discarded. As explained already in connection with FIG. 4 , this causes the lamellar area 70 of elastic material 36 to extend flush with the rear hip edge of the singled pad 2 and also prevents elastic material 36 from getting into the first partial section 62 .
  • the performance of one single, in particular, straight separating cut 60 is indicated in FIG. 9 .
  • FIG. 10 shows a further alternative inventive method variant, wherein the entire width of the available pad side part sheet 22 is used as a left-hand or right-hand pad side part in each case. It also indicates an area 42 in the first sheet 28 of carrier material 30 in which the non-elastic carrier material 30 is treated in such a fashion that it shows hardly any or no resistance at all to expansion. In particular, the area 42 could mark an area that is overstretched by “ring rolling”. The respective area 42 is bridged by a section or area 70 of elastically expandable material 36 , as shown below in the supply direction.
  • the particularity of the method variant of FIG. 10 is that a right-hand and a left-hand side part are formed in an alternating fashion.
  • a first longitudinal section 46 a and subsequent thereto, a second longitudinal section 46 b are separated which are joined to the two sides of a pad main part sheet 50 .
  • a respective separating cut 60 for singling the pads is thereby not basically changed. According to this method variant, it is possible to realize a larger width of the pad side parts 8 , 10 , as mentioned above.
  • the pad side parts 8 , 10 may also be folded on top of themselves as disclosed and taught in DE202004006951.2. This folding or folding on top of itself is advantageously effected along a folding line that extends in the longitudinal direction upstream of the separating station 44 where the longitudinal sections 46 are formed.
  • the sections folded on top of each other are preferably detachably fixed, in particular, by ultrasound weld points or by weak glue points, such that they are easy to unfold by hand.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Manufacturing & Machinery (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
US11/992,583 2005-10-12 2006-05-30 Method of producing a multiplicity of incontinence pads having main part and front and rear side parts attached thereto Active 2027-08-20 US8216414B2 (en)

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DE102005048868 2005-10-12
DE102005048868.4 2005-10-12
DE102005048868A DE102005048868A1 (de) 2005-10-12 2005-10-12 Verfahren zum Herstellen einer Vielzahl von einen Windelhauptteil und daran angefügte vordere und hintere Windelseitenteile aufweisenden Inkontinenzwegwerfwindeln
PCT/EP2006/005125 WO2007042084A1 (de) 2005-10-12 2006-05-30 Verfahren zum herstellen einer vielzahl von einen windelhauptteil und daran angefügte vordere und hintere windelseitenteile aufweisenden inkontinenzwegwerfwindeln

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JP (1) JP4902885B2 (de)
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US8708990B2 (en) 2006-10-27 2014-04-29 Paul Hartmann Ag Absorbent incontinence article with improved closure system
US8771249B2 (en) 2006-10-27 2014-07-08 Paul Hartmann Ag Absorbent incontinence article with improved closure system
US8784398B2 (en) 2006-10-27 2014-07-22 Paul Hartmann Ag Absorbent incontinence article with improved closure system
US20100168706A1 (en) * 2007-06-26 2010-07-01 Dragorad Vasic Method for Manufacturing an Absorbent Article
US8496778B2 (en) * 2007-06-26 2013-07-30 Sca Hygiene Products Ab Method for manufacturing an absorbent article
US8556878B2 (en) 2007-08-02 2013-10-15 Paul Hartmann Aktiengesellschaft Absorbing disposable incontinence diaper
US20150024919A1 (en) * 2012-04-19 2015-01-22 Zuiko Corporation Method and device for producing disposable worn article
US9265670B2 (en) * 2012-04-19 2016-02-23 Zuiko Corporation Method and device for producing disposable worn article

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DE502006007549D1 (de) 2010-09-09
WO2007042084A1 (de) 2007-04-19
ATE475393T1 (de) 2010-08-15
EP1933796A1 (de) 2008-06-25
ES2348925T3 (es) 2010-12-17
JP2009511139A (ja) 2009-03-19
AU2006301655A2 (en) 2008-08-07
JP4902885B2 (ja) 2012-03-21
PL1933796T3 (pl) 2011-01-31
EP1933796B1 (de) 2010-07-28
AU2006301655B2 (en) 2012-10-18
US20090084497A1 (en) 2009-04-02
AU2006301655A1 (en) 2007-04-19

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